4 ms·
> like if it's playing something that uses HDCP it might stop playing when there's no display on the other end of the connection to handshake with My understan
by yellowapple 4y ago
> like if it's playing something that uses HDCP it might stop playing when there's no display on the other end of the connection to handshake with
My understanding is that HDMI switches/receivers do the handshakes themselves, specifically to avoid this problem.
- zerocrates 4y agoThey can't just totally do it, at least: then the last hop to the actual display would be decrypted, sort of ruining the whole point of HDCP. My understanding is more that a receiver is just a passthrough for the communication between the source and the display. Though I'm surely oversimplifying.
- yellowapple 4y agoThe receiver could always reencrypt (and usually does, IIUC; signaling this is the point of the "repeater bit" in the protocol). If it was just a dumb passthrough, then there wouldn't be much need to advertise HDCP compatibility in the first place.
- zerocrates 4y agoGood point.